Biology for IGCSE & O level - Gas Exchange In Humans (Section 2 - No. 1)
What is the approximate normal breathing rate for an adult at rest?
5-7 breaths per minute
12-20 breaths per minute
25-30 breaths per minute
40-50 breaths per minute
Explanation
The normal breathing rate for an adult at rest is generally between 12 and 20 breaths per minute.
Comments (0)
